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| author | Tao Ma <tao.ma@oracle.com> | 2010-05-17 09:14:17 +0200 |
|---|---|---|
| committer | Tao Ma <tao.ma@oracle.com> | 2010-05-17 09:14:17 +0200 |
| commit | af2bf0d86019e0b0306965321096f8380b7ca830 (patch) | |
| tree | 6a203b0970b00229528ddcdb9adc6c0ce734461d /fs/ocfs2 | |
| parent | ocfs2: ocfs2_group_bitmap_size has to handle old volume. (diff) | |
| download | linux-af2bf0d86019e0b0306965321096f8380b7ca830.tar.xz linux-af2bf0d86019e0b0306965321096f8380b7ca830.zip | |
ocfs2: Add ocfs2_gd_is_discontig.
Add ocfs2_gd_is_discontig so that we can test whether
a group descriptor is discontiguous or not.
Signed-off-by: Tao Ma <tao.ma@oracle.com>
Diffstat (limited to 'fs/ocfs2')
| -rw-r--r-- | fs/ocfs2/ocfs2_fs.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h index 67bb8a77e868..b01d0dddfcc1 100644 --- a/fs/ocfs2/ocfs2_fs.h +++ b/fs/ocfs2/ocfs2_fs.h @@ -1574,5 +1574,19 @@ static inline void ocfs2_set_de_type(struct ocfs2_dir_entry *de, de->file_type = ocfs2_type_by_mode[(mode & S_IFMT)>>S_SHIFT]; } +static inline int ocfs2_gd_is_discontig(struct ocfs2_group_desc *gd) +{ + if ((offsetof(struct ocfs2_group_desc, bg_bitmap) + + le16_to_cpu(gd->bg_size)) != + offsetof(struct ocfs2_group_desc, bg_list)) + return 0; + /* + * Only valid to check l_next_free_rec if + * bg_bitmap + bg_size == bg_list. + */ + if (!gd->bg_list.l_next_free_rec) + return 0; + return 1; +} #endif /* _OCFS2_FS_H */ |